Constellation Energyvs.Duke Energy
CEG vs DUK · both in Utilities & power producers, part of the Energy, grid & critical infrastructure value chain: Electricity utilities and large power producers — from nuclear to renewable portfolios.
Constellation Energy and Duke Energy are similar in size by market cap; Duke Energy trades at the lower P/E (19.0 vs 23.8); year to date, Duke Energy leads (+7.1% vs −28.8%).
Side by side
| CEG | DUK | |
|---|---|---|
| Market cap | $90.3B | $97.8B |
| Price | $251.38 | $125.48 |
| Today | +0.3% | +0.2% |
| Return YTD | −28.8% | +7.1% |
| Return 1Y | −19.8% | +6.2% |
| P/E | 23.8 | 19.0 |
| P/S | 3.0 | 2.9 |
| P/B | 2.7 | 1.8 |
Data as of 2026-07-11 · updates daily after U.S. close
The two companies
Constellation EnergyCEG
The largest US nuclear power producer — delivering CO2-free baseload power, including via long-term agreements with data centres (Three Mile Island restart for Microsoft).
Full CEG profile →Duke EnergyDUK
Large US utility with a significant nuclear fleet and growing demand from electrification and data centres.
Full DUK profile →More comparisons in Utilities & power producers
See where CEG and DUK sit in the full Energy, grid & critical infrastructure map — every segment from suppliers to end markets.Open the Energy value chain →